diff options
Diffstat (limited to 'kernel/rcu/srcutiny.c')
| -rw-r--r-- | kernel/rcu/srcutiny.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/rcu/srcutiny.c b/kernel/rcu/srcutiny.c index 33adafdad261..b12fb0cec44d 100644 --- a/kernel/rcu/srcutiny.c +++ b/kernel/rcu/srcutiny.c @@ -197,6 +197,16 @@ void synchronize_srcu(struct srcu_struct *ssp) { struct rcu_synchronize rs; + RCU_LOCKDEP_WARN(lockdep_is_held(ssp) || + lock_is_held(&rcu_bh_lock_map) || + lock_is_held(&rcu_lock_map) || + lock_is_held(&rcu_sched_lock_map), + "Illegal synchronize_srcu() in same-type SRCU (or in RCU) read-side critical section"); + + if (rcu_scheduler_active == RCU_SCHEDULER_INACTIVE) + return; + + might_sleep(); init_rcu_head_on_stack(&rs.head); init_completion(&rs.completion); call_srcu(ssp, &rs.head, wakeme_after_rcu); |